KJV:
And Judah said unto Onan, Go in unto thy brother's wife, and marry her, and raise up seed to thy brother.
NASB:
Then Judah said to Onan, "Go in to your brother's wife, and perform your duty as a brother-in-law to her, and raise up offspring for your brother."
KJV:
If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband's brother shall go in unto her, and take her to him to wife, and perform the duty of an husband's brother unto her.
NASB:
"When brothers live together and one of them dies and has no son, the wife of the deceased shall not be married outside the family to a strange man. Her husband's brother shall go in to her and take her to himself as wife and perform the duty of a husband's brother to her.
KJV:
And if the man like not to take his brother's wife, then let his brother's wife go up to the gate unto the elders, and say, My husband's brother refuseth to raise up unto his brother a name in Israel, he will not perform the duty of my husband's brother.
NASB:
"But if the man does not desire to take his brother's wife, then his brother's wife shall go up to the gate to the elders and say, 'My husband's brother refuses to establish a name for his brother in Israel; he is not willing to perform the duty of a husband's brother to me.'